Key parameters at a glance
- A radius of 13.13 Earth radii
- A mass of 211.99 Earth masses
- Surface gravity around 1.23 g
- An orbital period of 3.739 days
- Semi-major axis 0.0467 AU
- Equilibrium temperature 1,192 K (919 °C)
- Distance from Earth 517.44 light-years
- Earth Similarity Index 0.108
- Travel time at Voyager 1 speed 9,125,111 years
TOI-905 b Planet Profile
Physical Specs
Classification
Planet Type
Gas Giant
Discovery
Size rank in cohort
Rank by radius
#904of 1771
top 51.0%
This planet
13.13R⊕
Gas Giant median
13.52R⊕
Nearest-size peers
| Metric | Earth | TOI-905 b | Jupiter |
|---|---|---|---|
| Radius (R⊕) | 1.00 | 13.13 | 11.21 |
| Mass (M⊕) | 1.00 | 211.99 | 317.83 |
| Density (g/cm³) | 5.51 | 0.52 | 1.33 |
| Surface Gravity (g) | 1.00 | 1.23 | 2.53 |
| Insolation (S⊕) | 1.00 | 337.00 | 0.037 |
Alternative Mass Estimates
| Method | Value | Interpretation |
|---|---|---|
| Best measured mass | 211.993 M⊕ | Direct mass measurement (not derived). |
Star Catalogue Identifiers
TIC
TIC 261867566
Gaia DR2
Gaia DR2 5795534040654879744
Gaia DR3
Gaia DR3 5795534040654879744
System
TOI-905
Percentile among Gas Giant cohort
Orbit & Habitability
Orbital Dynamics
Year Length
A year here lasts approximately 3.74 Earth days (1.0% of a terrestrial year) on a nearly circular orbit at a mean orbital distance of 0.0467 AU.
Transit Fingerprint
Depth
1.718 %
Duration
2.028 h
Impact parameter b
0.816
Rp / R★
0.131100
Transit midpoint (BJD)
2,458,643.3090
Photometric dip
Transit produces a flux drop of 17,180 ppm lasting ≈ 2.03 h.
Extended Orbital Architecture
Planet / star radius ratio
0.131100
Semi-major axis / stellar radius
11.470
Impact parameter (b)
0.816
RV semi-amplitude (K)
89.100 m/s
Transit mid-time (BJD)
2,458,643.3090
Long. of periastron (ω)
39.00°
Angular separation (arcsec)
0.29400
Eq. Temperature
1,192K
(919 °C)
Insolation (S⊕)
337.00
Earth = 1.00
Earth Similarity (ESI)
0.108
0 = alien, 1 = Earth-identical
Inside the inner HZ boundary (too hot for liquid water) — the dayside is scorched.
Detection Signatures
Transit photometry
A transit dip has been observed from at least one telescope.
Radial velocity
Stellar wobble has been measured spectroscopically.
Discovery Paper
Primary reference
Davis et al. 2020Instrument
TESS CCD Array
Publication
2020-11
Observation locale
Space
Discovery cohort
Planets confirmed in 2020 at Transiting Exoplanet Survey Satellite (TESS) (12 shown).
Host System: TOI-905
Spectral Class
G-type yellow (Sun-like)
Effective Temperature
5,570 K — cooler than the Sun (5,778 K)
Estimated Age
3.40 Gyr — younger than the Sun (4.6 Gyr)
Stellar Radius
0.918 R☉
Stellar Mass
0.968 M☉
Metallicity [Fe/H]
0.14
Extended Stellar Properties
Surface gravity (log g)
4.498 dex
Stellar density
1.760 g/cm³
Systemic radial velocity
42.44 km/s
Metallicity ratio
[Fe/H]
Multi-band Host Photometry — 11 bands
Astrometric Data
Parallax
6.274 mas
Total Proper Motion
48.590 mas/yr
PM Right Ascension
-25.84 mas/yr
PM Declination
-41.15 mas/yr
Galactic Cartesian (pc)
x = -0.215 · y = -0.236 · z = -0.948
Equatorial (J2000)
RA 227.65868° · Dec -71.36163°
Galactic ℓ, b
313.657° · -11.449°
Ecliptic λ, β
250.065° · -50.841°
HTM-20 index
371789910
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